UNDATED (CNN Newsource/WKRC) - The rarest stamp known to still exist in the United States is set to go to auction and is currently expected to sell for millions of dollars. It's the 1868 One-Cent ...

Here’s something for serious stamp collectors only. This summer, philatelists will have a chance to snag the rarest US stamp ever: the 1868 one-cent “Z-grill.” Interested? It’ll cost you (more than) a ...

Major stamp auctions are stellar events and none more so than the June 14-15 sale in New York of the key items from the Bill Gross collection, the most complete of United States postage stamp ...

One-Cent "Z" Grill stamp sells for $4.3 million at Siegel Auction Galleries. A Naples resident was responsible for selling a lucrative stamp collection. The most prestigious stamp sold for over $4 ...

PIMCO founder and investor Bill Gross — best known as the "Bond King" for his role in the bond market — collected $4.4 million at an auction for a rare stamp. What Happened: Gross, who has been shying ...

The United States Postal Service's newest stamp collection is finally here, transforming the iconic children's book Goodnight Moon into tiny illustrated works of art months after the postage ...

A one-cent postage stamp from 1868 is expected to become the most expensive U.S. stamp ever sold when it heads to auction in June. Known as the “Z-grill,” the stamp is the most-valued piece of what ...

If you've ever come across an old stamp collection and wondered if it might be worth something, you're not alone. Collecting vintage stamps isn't just a charming pastime-it can also uncover hidden ...